DATAJDBC-209 - Improve assertion on The QueryAnnotationHsqlIntegrationTests#executeCustomQueryWithReturnTypeIsDate

Since Timestamp extends Date the repository returns the Timestamp as it comes from the database.
Trying to compare that to an actual Date results in non determistic results, so we have to use an actual Timestamp.

Original pull request: #66.

src/test/java/org/springframework/data/jdbc/repository/query/QueryAnnotationHsqlIntegrationTests.java

@@ -17,6 +17,7 @@ package org.springframework.data.jdbc.repository.query;
 
 import static org.assertj.core.api.Assertions.*;
 
+import java.sql.Timestamp;
 import java.time.LocalDateTime;
 import java.util.Date;
 import java.util.List;
@@ -195,7 +196,7 @@ public class QueryAnnotationHsqlIntegrationTests {
 	@Test // DATAJDBC-175
 	public void executeCustomQueryWithReturnTypeIsDate() {
 
-		Date now = new Date();
+		Date now = new Timestamp(System.currentTimeMillis());
 		assertThat(repository.nowWithDate()).isAfterOrEqualsTo(now);
 
 	}